Improvement in sash and door clamps



THOMAS S. URIE, OF HUBBARDSTON, MICHIGAN.

IMPROVEMENT IN SASH AND DOOR OLMPS.

Specification forming part of Letters Patent No. 139,281, dated May 27, 1873; application led November 16, 1872.

To all whom it may concern:

Be it known that I, THOMAS S. URIE, of Hubbardston, in the county of Ionia and State of Michigan, have invented a new and Improved Sash and Door Clamp, of which the following is a specification:

A secure or release the article to be clamped.

A, B, C, and D, in the drawing, are the four sections or sides of the rectangular clampingframe. The piece A is firmly secured by nails or screws to a table or support, E, while the other pieces, B, C, and D are movable horizontally, at rightangles to their inner sides respectively. To the table E is pivoted a lever F, which is, by suitable links or rods a a, connected with the frame piece C in such manner that by swinging the lever the said frame piece will be moved nearer to or further away from the xed frame piece A opposite. A pivoted pawl, b, catching into a notched portion of the lever, serves to lock the same,

' and also the piece C, in any suitable position.

From the frame piece C project, at right angles toward A, straight slotted rodsd d, which are by rivets or pins connected with other rods, e e, that project in similar manner `from the stationary piece A toward O. When C is moved by the lever the rods d will slide on c and thereby insure the straight motion of C. The pieces A and (l are also connected with each other by two pairs of diagonal braces, ff, joined at their converging ends to form a set of lazy-tongs. The connecting pivots g g of these lazy-tongs are by other braces hh connected with the sliding sidepieces B and D, respectively, as shown in Figure 1. Thus, Whenever the pieceG is moved by the lever the consequent motion ot' the lazy-tongs will cause the pieces B and D to be moved apart or together simultaneously with the shifting of G. Guide-rods i and j, similar to the rods d and c, connect the pieces B and D directly and insure their direct motion. The ends ot the braces h h and rods ij are or ,may be perforated or slotted to be fastened in suitable position to the pieces B D in order to enlarge or diminish the frame and the proportionate distance between its opposite sides. u y

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination of the lever F, movable i frame pieces B C D, and fixed frame piece A with the lazy-tongs f f andjbraces h h, all ar ranged substantially as herein shown and described.

2'. The extension guides d e and 'i j incombination with the subject-matter of the foregoing clause.

THOMAS S. URIE.

Witnesses:

" A. C. BURNHAM, B. H. BATES. 

